| BASIC SHAPE STYLE | SQUARE |
| CROSS-SECTIONAL WIDTH ACROSS FLATS | 4.000 INCHES NOMINAL |
| HEAT TREATMENT | QUENCHED AND TEMPERED |
| LENGTH | 12.000 FEET MINIMUM AND 20.000 FEET MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | DOD-F-24669/1,GRADE 4130 MIL SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | STEEL COMP 4130 |
| MINIMUM TENSILE STRENGTH | 95000 POUNDS PER SQUARE INCH |
| MINIMUM YIELD STRENGTH | 65000 POUNDS PER SQUARE INCH |
| NONDEFINITIVE SPEC/STD DATA | 4130 GRADE |
| SPECIFICATION/STANDARD DATA | 81349-MIL-S-16974 GOVERNMENT SPECIFICATION |